21385208

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{205627}}^1$

素因数の和:205646

約数の個数: 16

約数和(自身を含む): 43181880

約数和(自身を除く): 21796672

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 205627, 411254, 822508, 1645016, 2673151, 5346302, 10692604, 21385208]

約数ペア:

[(1, 21385208), (2, 10692604), (4, 5346302), (8, 2673151), (13, 1645016), (26, 822508), (52, 411254), (104, 205627)]